From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f72.google.com (mail-pa0-f72.google.com [209.85.220.72]) by kanga.kvack.org (Postfix) with ESMTP id 78E056B0005 for ; Tue, 2 Aug 2016 14:09:23 -0400 (EDT) Received: by mail-pa0-f72.google.com with SMTP id pp5so311433743pac.3 for ; Tue, 02 Aug 2016 11:09:23 -0700 (PDT) Received: from mga03.intel.com (mga03.intel.com. [134.134.136.65]) by mx.google.com with ESMTP id xd8si4051037pac.276.2016.08.02.11.09.22 for ; Tue, 02 Aug 2016 11:09:22 -0700 (PDT) Subject: Re: [PATCH 1/2] mm: Allow disabling deferred struct page initialisation References: <1470143947-24443-1-git-send-email-srikar@linux.vnet.ibm.com> <1470143947-24443-2-git-send-email-srikar@linux.vnet.ibm.com> From: Dave Hansen Message-ID: <57A0E1D1.8020608@intel.com> Date: Tue, 2 Aug 2016 11:09:21 -0700 MIME-Version: 1.0 In-Reply-To: <1470143947-24443-2-git-send-email-srikar@linux.vnet.ibm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Srikar Dronamraju , linux-mm@kvack.org, Mel Gorman , Vlastimil Babka , Michal Hocko , Andrew Morton , Michael Ellerman , linuxppc-dev@lists.ozlabs.org On 08/02/2016 06:19 AM, Srikar Dronamraju wrote: > Kernels compiled with CONFIG_DEFERRED_STRUCT_PAGE_INIT will initialise > only certain size memory per node. The certain size takes into account > the dentry and inode cache sizes. However such a kernel when booting a > secondary kernel will not be able to allocate the required amount of > memory to suffice for the dentry and inode caches. This results in > crashes like the below on large systems such as 32 TB systems. What's a "secondary kernel"? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org